update en/application-dev/ui/ui-js-components-stepper.md.

Signed-off-by: LiAn <lian15@huawei.com> 
Signed-off-by: NLiAn <lian15@huawei.com>

en/application-dev/ui/ui-js-components-stepper.md

 # \<stepper> Development
 
-When multiple steps are required to complete a task, you can use the **<stepper>** component to navigate your users through the whole process. For details, see [stepper](../reference/arkui-js/js-components-container-stepper.md).
+When multiple steps are required to complete a task, you can use the **\<stepper>** component to navigate your users through the whole process. For details, see [stepper](../reference/arkui-js/js-components-container-stepper.md).
 
 
 > **NOTE**